A guy here ( I do not know him) has been using a drone to take videos and pictures of construction in CDO as well as things like this:
http://www.cdodev.com/2016/11/14/video-watch-sinulom-falls-aerial-video-tour/
We have not been to this water falls yet but I love waterfalls so we will try to find it and visit soon. This video is very impressive.
Don
buckeyeinthephilippines 